PORTIBM PC Portable (uses same BIOS as XT) 04E0-04FF - EISA(Enhanced Industry-Standard Architecture) A 32-bit superset of the IBMInternational Busiuness Machines ATIBM PC AT's expansion bus (which is now known as the ISA or Industry-Standard Architecture bus). DMAsee Direct Memory Access stop registers SeeAlso: PORTIBM PC Portable (uses same BIOS as XT) 0481h-048Bh"EISA(Enhanced Industry-Standard Architecture) A 32-bit superset of the IBMInternational Busiuness Machines ATIBM PC AT's expansion bus (which is now known as the ISA or Industry-Standard Architecture bus)." 04E0-04E2 RW channel 0 stops if DMAsee Direct Memory Access transfer reaches specified address 04E4-04E6 RW channel 1 04E8-04EA RW channel 2 04EC-04EE RW channel 3 04F4-04F6 RW channel 5 04F8-04FA RW channel 6 04FC-04FE RW channel 7